A history of the paper bag

It was slightly later that a woman named Margaret Knight, working for another company, the Columbia Paper Bag Company of Springfield, MA, designed a machine that could produce flat/square-bottomed paper bags, a great improvement on the earlier, structurally weaker envelope-style bag design. As a result, it is Knight who is more widely recognized as the inventor of the paper bag in the general form of the one shown in Counter Space. She’s also believed to be the first woman to achieve a U.S. patent.